Memory system, data storage device, user device and data management method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsHYOJIN JEONG, YoungJoon Choi, Sunghoon Lee, Jae-Hyeon Ju
Life of this patent
Estimating the term…
Abstract
A data management method of a data storage device having a data management unit different from a data management unit of a user device receives information regarding a storage area of a file to be deleted, from the user device, selects a storage area which matches with the data management unit of the data storage device, from among the storage area of the deleted file, and performs an erasing operation on the selected storage area which matches with the data management unit.
Claims26
A data management method of data storage device comprising a memory device and a controller, the method comprising:
- receiving a trim command including an address information associated with data stored in the memory device that is no longer required in a host;
- and
- marking a first portion of the data as invalid and keeping a second portion of the data as valid.
A data storage device comprising:
- a storage unit;
- and
- a control unit configured to control the storage unit and to receive a trim command including an address information associated with data stored in the storage unit and that is no longer required from a host,
- wherein the control unit configured to keep a first portion of the data which do not match with a data management unit of the storage unit, as valid and keep and mark a second portion of the data other than the first portion.
A data management method of data storage device comprising a memory device and a controller including a buffer memory, the method comprising:
- receiving a trim command including an address information relating to data stored in the buffer memory and no longer required from a host;
- marking a first portion of the data as invalid and keeping a second portion of the data as valid in the controller;
- and
- writing the second portion of the data into the memory device except the first portion of the data.
A data storage device comprising:
- a storage unit including at least one nonvolatile storage medium;
- a buffer memory configured to temporarily store data to be written in the storage unit;
- and
- a control unit configured to control the storage unit and the buffer memory in response to a trim command including an address information associated with data stored in the buffer memory and no longer required from a host,
- wherein the control unit configured to mark a first portion of the data in the buffer memory as invalid, and keep a second portion of the data in the buffer memory as valid,
- wherein the control unit writes the second portion of the data into the storage unit.
Dependencies are inferred from the claim text.